<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>单分支</title>
  </head>
  <body>
    <script>
      var name = prompt("请输入您的姓名：");
      if (name == "Tom") {
          document.write("hello tom");
      }
      document.write("-----------");
    </script>
  </body>
</html>
